1PP2

THE REFINED CRYSTAL STRUCTURE OF DIMERIC PHOSPHOLIPASE A2 AT 2.5 ANGSTROMS. ACCESS TO A SHIELDED CATALYTIC CENTER

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	R, L	CALCIUM-FREE PHOSPHOLIPASE A2	polymer	122	13607.3	2	UniProt (P00624) Pfam (PF00068) In PDB	Crotalus atrox (western diamondback rattlesnake)
2		water	water		18.0	137	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27214.6
All*	Total formula weight	27214.6

*Water molecules are not included.